Hirofumi Nakamura
90Patents
14h-index
174Co-inventors
87Inventor score
Filing activity: Apr 25, 1989 → Aug 10, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7451341B2 | Storage system and communications path control method for storage system | Physics | 69 | Active |
| US5856612A | Process for producing .alpha.-olefin oligomer | Chemistry; Metallurgy | 58 | Expired |
| US6488355B2 | Ink jet head | Performing Operations; Transporting | 53 | Expired |
| US5910619A | Process for producing .alpha.-olefin oligomers | Chemistry; Metallurgy | 51 | Expired |
| US5750816A | Process for the preparation of .alpha.-olefin oligomers | Chemistry; Metallurgy | 47 | Expired |
| US5750817A | Process for producing .alpha.-olefin oligomers and .alpha.-olefin oligomer compositions | Chemistry; Metallurgy | 39 | Expired |
| US6450615B2 | Ink jet printing apparatus and method using a pressure generating device to induce surface waves in an ink meniscus | Performing Operations; Transporting | 28 | Expired |
| US5585914A | Apparatus and method for measuring a temperature of a high temperature liquid contained in a furnace | Physics | 25 | Expired |
| US6100597A | Semiconductor device and method for manufacturing the same | Electricity | 20 | Expired |
| US6626525B1 | Actuator for an ink jet recording head | Performing Operations; Transporting | 17 | Expired |
| US6326234A | Semiconductor device and method for manufacturing the same | Electricity | 17 | Expired |
| US6222303A | Piezoelectric actuator having an array of drive columns | Electricity | 17 | Expired |
| US5817844A | Method of manufacturing a fatty acid ester of polyoxyalkylene alkyl ether | Performing Operations; Transporting | 17 | Expired |
| US6184400A | Method of manufacturing a fatty acid ester of polyoxyalkylene alkyl ether | Chemistry; Metallurgy | 14 | Expired |
| US6773857B2 | Electrophotographic photoreceptor, processes for producing the same, process cartridge, and electrophotographic apparatus | Physics | 14 | Expired |
| US6882544B2 | Printed circuit board, method for producing same and semiconductor device | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6344696B2 | Chip size package semiconductor device and method of forming the same | Electricity | 12 | Expired |
| US5374750A | Method and manufacturing of fatty acid esters of polyoxyalkylene alkyl ethers | Chemistry; Metallurgy | 11 | Expired |
| US6337201B1 | &bgr;-fructofuranosidase and its gene, method of isolating &bgr;-fructofuranosidase gene, system for producing &bgr;-fructofuranosidase, and &bgr;-fructofuranosidase variant | Chemistry; Metallurgy | 10 | Expired |
| US5012012A | Alkoxylation catalyst | Chemistry; Metallurgy | 10 | Expired |
| US6695437B2 | Inkjet recording head and method for driving an inkjet recording head | Performing Operations; Transporting | 10 | Expired |
| US8164191B2 | Semiconductor device | Electricity | 9 | Active |
| US7317610B2 | Sheet-shaped capacitor and method for manufacture thereof | Electricity | 9 | Expired |
| US6607981B1 | Method for forming a Cu interconnect pattern | Electricity | 8 | Expired |
| US7702256B2 | Image-forming apparatus including an electrophotographic photoreceptor having an undercoat layer with metal oxide particles and an acceptor compound | Physics | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.